油菜是需肥较多的作物,适当增施肥料和合理施肥是提高油菜单产的重要措施。油菜一生需要吸收多种营养元素,特别是需要氮、磷、钾、硫、硼等元素。现就这几种营养元素的生理作用、吸收和分布规律,以及合理施肥技术等问题概述如下。 一、营养特性 (一)氮营养:氮在植物生命活动中 Rape is the need to fertilizer more crops, proper fertilization and fertilization is an important measure to improve the yield of rapeseed. Rape need to absorb a variety of nutrients throughout life, especially the need for nitrogen, phosphorus, potassium, sulfur, boron and other elements. Now on the physiological effects of these nutrient elements, absorption and distribution of law, and fertilization techniques and other issues outlined below. First, the nutritional characteristics (A) Nitrogen nutrition: nitrogen in plant life activities